Molar and molecular weight of Na2SeO4

• Relative molecular weight of Na2SeO4: 188.93713856
• Molar mass of Na2SeO4: 188.93713856 g/mol (0.18894 kg/mol)

Calculation of the relative molecular and molar mass of Na2SeO4

• Mr[Na2SeO4] = Ar[Na] * 2 + Ar[Se] + Ar[O] * 4 = 22.98976928 * 2 + 78.96 + 15.9994 * 4 = 188.93713856
• Molar mass (kg/mol) = Mr[Na2SeO4] : 1000 = 188.93713856 : 1000 = 0.18894 kg/mol

Na2SeO4: percent composition by element

• Sodium (Na) = 45.97953856 : 188.93713856 * 100 = 24.336 %
• Selenium (Se) = 78.96 : 188.93713856 * 100 = 41.792 %
• Oxygen (O) = 63.9976 : 188.93713856 * 100 = 33.872 %

Molar mass calculator